JPS5476405A - Heat treatment method with laser - Google Patents

Heat treatment method with laser

Info

Publication number
JPS5476405A
JPS5476405A JP14353177A JP14353177A JPS5476405A JP S5476405 A JPS5476405 A JP S5476405A JP 14353177 A JP14353177 A JP 14353177A JP 14353177 A JP14353177 A JP 14353177A JP S5476405 A JPS5476405 A JP S5476405A
Authority
JP
Japan
Prior art keywords
product
laser beam
power density
heat treatment
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14353177A
Other languages
Japanese (ja)
Inventor
Taisuke Shimoi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14353177A priority Critical patent/JPS5476405A/en
Publication of JPS5476405A publication Critical patent/JPS5476405A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/34—Methods of heating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Lasers (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To carry out efficient and reliable heat treatment using laser without melting a product to be worked, by setting the power density of laser beam lower than that of an equation at which the product is melted. CONSTITUTION:When a product to be worked is heat treated using laser beam, the melting limit power density Pm of the product is caluculated according to the equation (where Tm; the m.p. of the product, K; heat conductivity, R; heat diffusivity, t; the pulse width of laser beam and a; the spot radius of laser beam). The power density of laser beam to be radiated to the product is set lower than the value of the equation, and the product surface is subjected to heat treatment such as hardening. By this method the power density of laser beam can be set simply and good heat tratment can be performed.
JP14353177A 1977-11-30 1977-11-30 Heat treatment method with laser Pending JPS5476405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14353177A JPS5476405A (en) 1977-11-30 1977-11-30 Heat treatment method with laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14353177A JPS5476405A (en) 1977-11-30 1977-11-30 Heat treatment method with laser

Publications (1)

Publication Number Publication Date
JPS5476405A true JPS5476405A (en) 1979-06-19

Family

ID=15340899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14353177A Pending JPS5476405A (en) 1977-11-30 1977-11-30 Heat treatment method with laser

Country Status (1)

Country Link
JP (1) JPS5476405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6064425A (en) * 1983-09-19 1985-04-13 Fujitsu Ltd Formation of discrimination pattern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6064425A (en) * 1983-09-19 1985-04-13 Fujitsu Ltd Formation of discrimination pattern

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